Programmer Group

1, Concept 1.1,TLS Transport Layer Security protocol As the successor of SSL protocol, it has become the next generation network security and data integrity security protocol 1.2,SSL Secure Socket Layer The network transport layer, located in TCP/IP, is a security protocol that provides security and data integrity for network communication ...

The two key points in studying Fairplay DRM (Digital Rights Management) are authorization and encryption. However, there has been little research on App DRM for a long time, and it is on this premise that Fairplay DRM has superimposed a "barrier" for the security research of iOS App. By analyzing the problems in the design and impleme ...

1. Object class 1.1. equals method 1.1.1 comparison of = = and equals ==Is a comparison operator ==: you can judge both the basic type and the reference type ==: if the basic type is judged, whether the values are equal is judged ==: if the reference type is judged, whether the addresses are equal is judged, that is, whether the same ...

Java 13 Officially released on September 17, 2019, please Download Java 13 here. Some new features in Java 13 JEP 350: dynamic CDS Archive JEP-351: ZGC: uncommit unused memory JEP-353: re implementing legacy socket API JEP-354: switch expression (Preview) (developer function) JEP-355: text block (Preview) (developer function) 1. JEP 350 dyn ...

How to use tmux 1. The role of tmux (1)It allows simultaneous access to multiple sessions in a single window. This is useful for running multiple command-line programs at the same time. (2) It allows new windows"Access"Session already exists. (3)It allows multiple connection windows per session, so multiple people can share the session in rea ...

Previously, we have released ten articles of Numpy series for you. Here we come to an end for the time being. Now we provide you with 100 Numpy exercises as a leak detection and filling!Previously, I summarized the common functions in Numpy for you, but there are no examples to explain. Well, today's 100 questions are a good exercise. Source: ...

  1. Experimental task 1 The program task1.asm source code is given assume cs:code, ds:data data segment x db 1, 9, 3 len1 equ $ - x y dw 1, 9, 3 len2 equ $ - y data ends code segment start: mov ax, data mov ds, ax mov si, offset x mov cx, len1 mov ah, 2 s1:mov dl, [si] or dl, 30h int 21h m ...

733. Image rendering LeetCode simple single \color{#00AF9B} {simple} simple There is a picture represented by a two-dimensional integer array. Each integer represents the pixel valu ...

Project code reference resources Know and never forget the original heart 1. Implementation of SVM The previous section is mainly about the acquisition of Chinese word segmentation and word vector expression. However, each article contains a different number of words, so this paper represents the document by calculating the average word vecto ...

1, Closure What closures are, how closures are generated, and the functions of closures are explained one by one below 1) The classic use of closures. The following code implements three buttons. When you click which button, the prompt is the corresponding button. However, in the following code, no matter which button you click, the output res ...